80 MHz Cortex-M4 with FPU — processing headroom for sensor fusion and control loops
The STM32L496QGI6P is an ARM Cortex-M4 MCU clocked at 80 MHz, with single-cycle multiply-accumulate and hardware floating-point unit — the FPU handles sensor fusion math and PID loops without an external DSP or coprocessor. On-chip memory totals 1 MB Flash and 320 KB SRAM, enough for a full FreeRTOS application with TCP/IP stack, GUI framebuffer, and data logging buffers without external memory. The 132-UFBGA (7x7 mm) package packs 110 I/O lines into a 0.5 mm pitch ball grid array — high pin density for parallel buses and multi-channel sensor arrays, but the fine pitch demands a 4-layer PCB with microvia fan-out for reliable routing.
Connectivity and analog — fieldbus-ready, sensor-direct
On-chip peripherals include CANbus, USB OTG, QSPI for external NOR flash, and multiple SPI/I²C/UART interfaces — the MCU connects directly to CANopen or Modbus fieldbus networks without an external transceiver for the protocol layer. The 19-channel 12-bit ADC and dual 12-bit DAC acquire analog sensor signals and output control voltages — the ADC samples at up to 5 Msps with hardware oversampling, reducing the CPU load for averaging.
Active production — no end-of-life watch needed
ROHS3 compliant per the manufacturer's declaration, with no REACH or halogen exemptions that would trigger a compliance review at incoming inspection.